Shoe machine



Oct. 18, 1949. R. N. suTToN ET AL SHOE MACHINE 4 Sheets-Shet '1#llllllllhlvlllll J Filed March 1B, 194'? OCL 18, 1949. R N SUTTON ETAL2,485,332

SHOE MACHINE 4 Sheets-sheet 2 v Filed.A March 18,- 1947 Oct. 178, 1949.R, N, SUTTQN ET AL 2,485,332

SHOE MACHINE Filed March 18, 1947 4 sheets-sheet 3 Patented Oct. 18,1949 UNITED STATES PATENT OFFICE SHOE MACHINE Roy N. Sutton and Elmer A.Thomas, St. Louis, Mo., assignors to Arrow Shoe Machinery Co., St.Louis, Mo., a corporation of Missouri Application March 18, 1947, SerialNo. 735,294

17 Claims. l i

This invention relates to shoe machines and, more particularly, toshoe-finishing apparatus for use primarily in repairing shoes.

Among the several objects of the invention may be noted the provision ofan improved shoefinishing or repairing machine, including an adequatenumber of operating tools in a compact arrangement requiring littleiioor space; the provision of a machine of this class which alsorequires little floor space for maneuvers of the operator; the provisionof a machine of this class including a selectively operabledust-collection system; the provision of a machine of the classdescribed wherein the shoe-finishing or repairing tools may be easilyremoved and replaced without a large amount of disassembling of machineparts; and the provision of a shoe machine such as described which iseconomical to construct and operate. Other objects will be in partapparent and in part pointed out hereinafter.

The invention accordingly comprises the elements and combinations ofelements, features of construction, and arrangements of parts which willbe exemplified in the structures hereinafter described, and the scope ofthe application of which will be indicated in the following claims.

In the accompanying drawings, in which one of various possibleembodiments of the invention is illustrated,

Fig. l is a front elevation of the machine;

Fig. 2 is a side elevation of the machine as viewed from the right ofFig. 1;

Fig. 3 is a plan view of Fig. l;

Fig. 4 is an enlarged section taken on line 4 3 of Fig. S, butillustrating in solid lines the dustcollecting hoods of the inventionswung aside;

Fig. 5 is an enlarged section taken on line 5 5 of Fig. 4;

Fig. 6 is an enlarged section taken on line 6 8 ci Fig. 4;

Fig. 7 is a detail sectional view of a combination heel sander and heelbreaster;

Fig. 8 is a detail section of an expansible mandrel for a bottom sander;

Fig. 9 is a transverse section taken on line 9 9 of Fig. 8;

Fig. l0 is an enlarged fragmentary perspective of an expansible elementof the mandrel of Fig. 8; and,

Fig. 11 is a detail section of an expansible mandrel for a heel sander.

Similar reference characters indicate correspending parts throughout theseveral views of the drawings.

Conventional shoe-nishing or repairing machines embody an elongate frameof considerable length in which is journalled a long shaft extending thelength of the frame and carrying a plurality of shoe-finishing orrepairing tools, such as sanding wheels, brushes, buffers or burnishers,etc. Such machines not only occupy considerable floor area but alsorequire considerable additional oor area for standing and walking roomfor the operator, and hence cannot be used where only limited space isavailable. This invention provides a novel shoe-finishing or repairingmachine which, while including a sufficient number of shoe-finishing orrepairing tools for the usual finishing or repairing operations,occupies much less space than conventional machines, and wherein toolsare selectively movable to a given working position so that less spaceis required for the operator. Thus, this invention provides ashoe-finishing or repairing machine primarily advantageous in that itmay be located and used in a limited space. I

Referring now to Figs. 1-6 of the drawings, the shoe-iinishing orrepairing machine of this invention is shown to include an uprighthousing i which serves as a base for various parts of the machine and asan enclosure for a driving motor 3, a blower 5 and other parts to bedescribed. Housing I comprises a front w'all 1, a back wall 9, sidewalls I I, and a table top I3. Fixed upon the table top is an elongatesupporting block I5 which extends centrally from front to rear. Block I5is in the form of an inverted box having a top I7, side walls I9 and 2|,a front Wall 23 and a back Wall 25. Block I5 supports a bearing 21secured to its top Il with the bearing axis extending transversely. Ashaft 29 is centrally journalled in this bearing with its end extendingfrom opposite ends of the bearing. An overhung carriage or turret 3I isfixed on one end of shaft 29 and a similar carriage or turret 33 isfixed on the other end of the shaft. Thus the arrangement is such as toprovide a pair of axially spaced carriages or turrets connected forconjoint rotation about a common axis.

The turrets 3| and 33 are substantially identical, each comprising adisc having a hub Xed to the shaft 29. A plurality of spindle bearinghousings 35 are bolted upon the outer faces of each of the discs for thereception of rotary tool spindles with the axes of the tool spindlesparallel to and equidistant from the axis of shaft 29. As illustrated,each of the turrets includes four such spindle bearing housings 35spaced at 90 intervals around the turrets, with each housing on oneturret axially aligned with a corresponding 3 housing on the other. Eachbearing housing 35 is fitted with bearings 31 (Fig. 4) wherein isjournalled a tool spindle. Turret 3| thus has four spindles 39, 4|, 43and 45 and turret 33 has four spindles 49, 5i, 53 and 55 journalledtherein. The following pairs of spindles are axially aligned: 39 and 49,4| and 5I, 43 and 53,45 and 55.

Each of the spindles extends through an aperture to the inside of theturrets and carries at its inner end a female cone 1clutch element 51adapted to be driven, thereby to drive the spindle. The other ends ofthe spindles extend axially outward from the spindle bearing housingsand carry shoe-finishing tools. As illustrated, spindles 39, 4|, 43 and45 on turret 3| respectively carry a combination heel sander and heelbreaster 59, a bottom sander 6|, a brush 63 for black shoes, and a brush65 for tan shoes. Spindles 49, 5 I, 53 and 55 on turret 33 respectivelycarry a flatsurfaced heel sander 69, a round-surfaced heel sander 1 I,and heel burnishers 13 and 15.

A circular indexing latch block 11 is fixed for rotation with shaft 29and turrets 3| and 33. It is located adjacent the turret 3|. This blockhas four latch-receiving notches 19 spaced at 90 intervals correspondingto the spacing of the tool spindles, being thus phased therewith. A rockshaft 8|, journalled in the front wall of block I5 and a bearing 83depending from its top I1, carries a latch 85 receivable in notches 19.The arrangement is such that shaft 81| may be rocked counterclockwise,as viewed in Fig. 4, to disengage latch 85 from a notch 19, whereuponthe shaft 29 and turrets 3| and 33 may be manually rotated by grasping aconvenient bearing housing to any one of four indexed positions whereintwo of the shoe-finishing tools (one on turret 3| and the other onturret 33) are in a working position at the front of the machine so thata shoe may be applied to either tool. Shaft 8| may then rock clockwiseto re-engage latch 85 in the appropriate notch 19 to latch the turretsin position. As illustrated in Figs. l-3, spindles 39 and 49 carryingtools 59 and 69 are in working position at the front of the machine, andlatch 85 is engaged in the indexing notch 19 for these spindles to latchthe turrets with these spindles in working position.

A driving clutch shaft 81 is journalled in bearings 89 which are mountedupon the top of the block I5. This shaft is driven through a belt drive9| from motor 3 mounted beneath the table top I3 in housing I. The beltof this drive passes throughsuitable apertures in the table top I3 andthe top I1 of block |5 (Fig. 6). Male cone clutch elements 90 aresplined on the opposite ends of the shaft 81 extending from bearings 89so as to be axially shiftable but non-rotatable thereon. Shaft 81 is sopositioned that driving clutch elements 8| are releasably engageablewith the two driven clutch elements 51 on two tool spindles to drivethem in their working positions. The clutch elements 90 are biasedtoward engagement with clutch elements 51 by springs 93 reacting fromthe blocks for bearings 89. They are shiftable out of engagement withclutch elements 51 by means including shifting forks 95 on shifting forklevers 91 pivoted for rocking movement on pivots 99 carried by the sidewalls I9 and 2| of block I5.

The shifting fork levers 91 are adapted to be rocked to shift drivingclutch elements 90 out of engagement with driven clutch elements 51 uponrocking of shaft 8| to release the latch 85 from an indexing notch 19.As illustrated, shaft 8| has fixed thereon a double crank |0I, connectedby links |03 and |05 to the shifting fork levers 91, in such a mannerthat as shaft 8| rocks counterclockwise (Fig. 4), links |03 and |05 rocklevers 91 toward each other to shift driving clutch elements 90 towardeach other and out of engagement with the driven clutch elements 51.

Pedal-operated means is provided for rocking shaft 8| counterclockwiseto release the latch 35 and disengage the clutches. As illustrated, apedal |01 is pivoted at |09 outside housing I and extends outwardthrough an aperture in the front wall of the housing. The pedal isconnected by a link to the end of a crank arm I3 fixed on the shaft 8|and extending to the left through an the pedal |01 so that the pedal isnormally maintained in raised position, in which position the latch isengaged in a notch 19 and the clutches for driving the two spindles inworking position are engaged.

Means is provided for collecting dust resulting from use of thecombination heel sander and heel breaster 59 and the bottom sander 6| onturret 3i and from use of the heel sanders 69 and 1| on turret 33. (Useof the other tools on the turret i does not necessitate dustcollection.) A dust-collecting hood I1 is provided for collecting dustresulting from use of tools 59 and 5I on turret 3|. This hood is carriedby an arm |I9 pivoted for lateral swinging movement upon a pivot |2| atl; the left of table top I3 so that the hood may swing outward from adust-collecting position with respect to a tool in the working position(Fig. 1) to a retracted position clearing the tool (Fig. 4). Indust-collecting position, hood II1 engages one of closure plates |22fixed on the bearing housings 35 for spindles 39 and 4| so as to providea dustcollecting enclosure around tool 59 or 6|. The hood has an outlet|23 connected by means of a exible conduit |25 to the suction manifold|21 of the blower 5 within housing I, conduit |25 passing through anaperture in the left side wall I of the housing.

Similarly, a dust-collecting hood |31 is provided for collecting dustresulting from use of tools 59 and 1| on turret 33. This hood is carriedby an arm |39 pivoted for lateral swinging movement upon a pivot |4| atthe right of table top |3 so that the hood may swing outward from adustcollecting position with respect to a tool in working position(Fig. 1) to a retracted position clearing the tool (Fig. 4). Indust-collecting position, hood |31 engages one of closure plates |42fixed on the bearing housings 35 for spindles 49 and 5| so as to providea dust-collecting enclosure around tool 69 or 1|. Hood |31 has an outlet|43 connected by means of a flexible conduit |45 to the suction manifold|21, conduit |45 passing through an aperture in the right side wall ofhousing I.

A drawer |41, which is insertable into and removable from the suctionmanifold through the right side wall of housing I, contains a suitabledust collector, such as a filter, for collecting dust. The collector may:be removed for cleaning or replacement simply by pulling out thedrawer. The blower exhausts through a duct |49 extending through theback wallV 9 of the housing I. It is driven by a belt drive |59 frommotor 3'.

The dust-collecting hoods ||1 and |31 are swingable laterally to clearall the tools so as to permit turrets 3| and 33 to be rotated to bringany desired tools to working position at the front of the machine. It ispreferred to correlate swinging of the hoods with the operations ofreleasing the turret latching means and disengaging the clutches. Tothis en d, means is provided for swinging the hoods laterally outward toretracted position concurrently with depression of the pedal |01.

As illustrated, dust hood arms ||9 and |39 are provided with cranks |5|and |53, respectively. These cranks are connected by links |55 and |51to the outer ends of rocking levers |59 and |6|, which are pivoted at|63 and |65 beneath table top |3. The inner ends of rocking levers |59and |6| are connected by pin and slot joints to a member |61 adapted toreciprocate vertically in an aperture in the table top I3. The pedal |01is linked to reciprocable member |61 by a linkage including a connectingrod |69 and a lost-motion connection |1|. The latter comprises a pin |13extending from an articulated link at the upper end of rod |69 through avertical slot |11 in the lower end of member |61. The purpose of thislost-motion connection will ap-pear.

The arrangement is such that when pedal |01 is depressed to disengagethe turret latch and the clutches, connecting rod |69 is pulled down sothat pin |13 pulls down member |61 to the solid-line position of Fig. 4.'Ihis rocks the outer ends of levers |59 and |6| upward and, throughlinks |55 and |51 and cranks |5| and |53, swings arms |9 and |39laterally outward to retract the hoods ||1 and |31. The conduits |25 and|45 are made sufficiently ilexible to permit swinging movement of thehoods.

In the illustrated embodiment of the invention,

hood |1 is too small to accommodate the brushes 63 and 65 (which are oflarger diameter than the hood |1) and hood |31 is too small toaccommodate the heel burnishers 13' and 15 (which are wider than thehood |31). As previously mentioned, dust collection is not required whentools 63, 65, 13 and 15 are used. The hoods are not made large enough toaccommodate these tools as it is desirable that the hoods .be as smallas possible to reduce the necessary blower capacity. It is thereforedesirable to maintain the hoods swung aside in retracted position whenany of tools 63, 65, 13 and 15 are in working position, inasmuch as thehoods will not iit over them.

To provide for maintaining the hoods swung aside when these tools are inworking position, a cam-controlled lever IBI, fixed on a rock shaft |83jou-rnalled in the side wall 2| of block l5, is connected by a pin andslot joint |85 to the upper end of the reciprocable member |61. Shaft|83, outside the block I5, carries a follower lever |81 having a camfollower |89 at its free end adapted to engage a plate cam |9| xed forrotation with shaft 29 and the turrets adjacent turret 33. The cam has alobe |93 which is of such arcuate extent and so phased as to maintainlevers |81 and |8| and consequently member |61 depressed when either ofpaired spindles 43, 53 or paired spindles 45, 55 are in workingposition. With member |61 depressed, the hoods I1 and |31 are swungaside to retracted position, as illustrated in solid lines in Fig. 4. Aspring |95 is provided to bias the cam follower lever |81 toward thecam. The lost-motion connection |1| permits upward 6, movement of pedal|01 to latch the turrets and engage the clutches even though mem-ber |61is maintained in depressed position.

The machine is also illustrated as provided with a bearing housing 20|mounted on top of the bearings 21 and 89 for the reception of twospindles 203 and 205, one above the other, extending transversely withrespect to turret shaft 29. These spindles are adapted to :be driven byindividual belt drives 201 and 209 from a motor 2|| mounted on the tabletop |3. The upper spindle 293 carries an edge trimming tool 2 |3 on itsfree end extending forward from the bearing housing. The lower spindle205 carries atop lift cutter or trimmer tool 2 5 on its free endextending forward from the bearing housing. Suitable dust-collectingmeans (not shown) may be provided for tools 2 i3 and 2|5.

Operation of the above-described shoe-iinishing or repairing machine isas follows: y

As illustrated in Figs. 1-3, spindles 39 and 49 carrying the combinationheel sander and heel breaster 59 and the flat-surfaced heel sander 69,respectively, are in working position at the front of the machine. Thepedal |01 is raised. Rotation of the turrets is prevented by engagementof latch 65 in the indexing notch 19 cor. responding to paired spindles39 and 49 and tools 59 and 69. The driving clutch elements 90 areengaged with the driven clutch elements 51 on spindles 99 and 49 todrive them and rotate the tools 59 and 69 thereon. The cam follower |89is biased by spring |95 into engagement with the low portion of theperiphery of cam |9|, and member |61 consequently is raised. Hoods ||1and |31 thus are swung inward over tools 59 and 69 and collect dustresulting from use there Assuming that the operator should requireeither of paired tools 6| or 1| (bottom sander or round-surfaced heelsander) for operation upon a shoe, he will depress pedal |01, thusrocking shaft 8| counterclockwise to release the turret latch 65 fromthe notch 19 and to disengage the clutch elements, and pulling downmember |61 to swing aside the hoods ||1 and |31 in the manner previouslydescribed and as illustrated in Fig. 4. This permits rotation of theturrets 3| and 33. He then grasps one of the spindle bearing housings 35and rotates the turrets to bring tools 6| and 1| to the workingposition. The pedal may be released when the turrets have been partiallyrotated, since engagement of latch l65 with the periphery of latch block11 will maintain it depressed. When tools 6| and 1| are in the workingposition, latch automatically snaps into the corresponding indexingnotch, shaft 8| rocking clockwise due to the biasing action of springs93, and the clutches re-engage to drive spindles 4| and 5| and tools 6|and 1|. Clockwise rotation of crank arm ||3 lifts link to return thepedal to raised position. The cam |9| is rotated `to such angularposition that cam follower |89 is again biased by spring 95 into'engagement with the low portion of the cam eriphery so that member |61is raised to swing the hoods ||1 and |31 inward to dust-collectingposition over tools 6| and 1|.

Assume now that it is desired to use either of paired tools 63 or 13(black shoe brush or heel burnisher). The operator will depress thepedal and rotate the turrets as above described to bring these tools tothe working position. The cam |9|, however, now becomes rotated to suchangular position that the cam follower |89 engages the lobe of the camto hold member |61 in depressed position. This holds aside the hoods ||1and |31. The pedal |01, however, is lifted to its raised position, latch85 snaps into a notch 19, and the spindle driving clutches are engaged,since `the lost-motion connection |1| permits movement of these elementsindependently of member |61. Thus, even though member |61 remainsdepressed, pin |13 of the lost-motion connection rises upward in theslot |11 thereof as the pedal lifts to raised position. The operation isthe same when tools 65 and 15 are brought to working position.

The above-described shoe-finishing or repairing machine thus includes aplurality of shoefinishing or repairing tools suflicient in number forthe ordinary finishing or repairing operations in a compact apparatuswhich takes up comparatively little loor space. In a typical embodimentthe machine occupies only about six square feet of oor area. Also, allthe tools are selectively accessible to an operator standing within alimited space, Another important advantage of the machine of thisinvention is that the spindles have accessible ends for the tools, andthe tools may be readily applied to or removed from them withoutdisassembly of shafts from bearings, as in prior machines. Also, sinceless than the entire number of spindles are drivenat one time, and sincedust is collected at only two tools, less power is required to drive thespindles and the blower.

Details of the combination heel sander and heel breaster 59 on spindle39 are shown in Fig. 1. As illustrated, spindle 39 is formed with anextension 22| of reduced diameter so as to have an annular shoulder 223spaced from its free end. A sleeve 225 is fixed upon extension 22| as byset screws 221 with its inner end engaging the shoulder. Spindle 39 andsleeve 225 constitute a cantilevered arbor extending outward from thebearing housing 35 for the spindle. Sleeve 225 is of such length as toextend beyond the free end of the extension 22|. It is formed adjacentits inner end with a flange 229 having a conical wedge 23| whichconverges toward the outer free end of the sleeve. A collar 233 slidableon the sleeve has a conical wedge 235 which converges away from the freeend of the sleeve. Between flange 229 and collar 233 is an annularelastic ring 231 of rubber or the like, tted upon the sleeve with itscentral aperture countersunk 'for reception of the opposed wedges 23|and 235.

A nut 239 is threaded upon the outer end of the sleeve backing up thecollar.

This arrangement is such that nut 239 may be threaded up on the sleeveto slide collar 233 toward the flange 229, thereby axially to compressthe elastic ring 231 and radially to expand it to increase its diameter.Radial expansion of the ring is also facilitated by the wedging actionof wedges 23| and 235 upon the ring. The ring 231 is expanded within anendless band 24| of an abrasive web, such as sandpaper, to form a heelsander 243. The band 24| is expanded to circular form and gripped indriving relation by the expanded ring 231.

The heel breaster, generally designated 245, comprises a conical mandrel246 including a stud 241 which is threaded into the end of sleeve 225projecting beyond the free end of spindle extension 22|. Stud 241 isformed adjacent its threaded end with a conical head 249 convergingtoward the threaded portion and a stem 25| extending outward from thehead. On stem' 25| is fixed a conical resilient core 253 of rubber orthe like,

the conical surface of which is a continuation of the conical surface ofhead 249. A developed blank 255 of abrasive web, such as sandpaper, or apreformed hollow conic frustum of abrasive web is fitted upon theconical surface defined by the core 253 and the head 249. The inner endportion of the web is clamped between the head 249 and the conic wall ofa countersunk aperture formedin a cap 251 fixed on the outer end of thesleeve 225.

The diameter of the outer end of the heel breaster 245 is less than thediameter of the abrasive band 24| of the heel sander 243 so that thelatter may be removed and replaced over the end of the tool withoutremoving the heel breaster. To remove the band 24|, nut 239 is backedoff t0 release the compression on elastic ring '231, whereupon the ringcontracts radially to release the band. To replace the abrasive blank255 of the heel breaster, the conical mandrel 246 is unthreaded from thesleeve, a new blank 255 fitted thereon, and the mandrel is threaded backinto the end of the sleeve to clamp the inner end portion of the blankbetween head 249 and the cap 251.

Figs. 8-10 illustrate an expansible mandrel for bottom sander 6|,particularly adapted for quick replacement of abrasive bands usedthereon. As shown, the bottom sander spindle 4| is formed with anextension 26| of reduced diameter so as to have an annular shoulder 263spaced from its free end. A sleeve 265 having an outer conical wedgingsurface is fixed upon extension 26|' as by set screws 261 with its innerend engaging the shoulder. The conical surface of the sleeve convergesaway from the spindle. Fixed by a taper pin 268 within the end of thesleeve which projects beyond extension 26| is a stud 269 formed with ahead providing an outwardly facing shoulder 21|. The stud is coaxialwith the spindle 4|,

and its outer end, which extends out of the sleeve,

is threaded. Spindle 4|, sleeve 265 and stud 269 constitute acantilevered arbor extending outward from the bearing housing 35 for thespindle. An annular, resilient expansion member, generally designated213, is mounted for axial sliding movement with respect to conicalsleeve 265 and is adapted to be expanded radially by wedging action whenmoved axially inward to expand an elastic cylindrical ring or sleeve 215into gripping engagement with a band 211 of an abrasive web, such assandpaper.

Expansion member 213 comprises a unitary spring ring capable ofsubstantially uniform radial expansion and contraction for variation ofits diameter. It includes an annular series of flat, wedge-shapedfingers 219 which lie in generally radial planes and extend axially withrespect to conical sleeve 265. The fingers are widest at their axiallyouter ends 280, are provided with inwardly facing shoulders 28| adjacentsaid ends, and taper in width toward their axially inner ends 232. Theradially outer edges 283 of the fingers lie in a cylindrical surface andengage the interior of the elastic cylindrical ring 215. The radiallyinner tapering edges 285 of the ngers lie in a conical surface inengagement with conical sleeve 265. Pairs of adjacent fingers arealternately connected at their axially outer ends 280 by webs 281 and attheir axially inner ends 282 by webs 289, webs 281 being annularlystaggered with respect to Webs '289.

A nut 29| threaded on the outer end of stud 269 backs up the expansionmember 213. The expansion member is biased axially outward bv a coilspring 293 surrounding the stud and reacting from shoulder 21| of thestud against shoulders 28| of the lingers 219 so that Webs 281 of themember 213 engage the nut. The nut normally is threaded up on the studto slide expansion member 213 suiiiciently inward to cause it to expandradially by Wedging action of conical sleeve 265, thus to expand elasticsleeve 215 ito gripping engagement with the band v211 of abrasive web.To remove the abrasive band, nut 29| is backed off. Spring 293 movesexpansion mem'- ber axially outward, whereupon it contracts radially torelease the band, which may then be removed over the outer end of themandrel. A new band may then be placed on the mandrel and the nutthreaded up to expand member 213 and sleeve 215 thus to grip the band.

Fig. 11 illustrates an expansible mandrel for heel sander 69 on spindle49. This is similar to the heel sander mandrel construction of thecombination heel sander and heel breaster 59. As shown, spindle 49 isformed with an extension 30| of reduced diameter so as to have anannular shoulder 303 spaced from its free end. A sleeve 305 is fixedupon extension 30| as by set screws 301 with its inner end engaging theshoulder. Spindle 49 and sleeve 305 constitute a cantilevered arborextending outward from the bearing housing for the spindle. The sleeveis formed adjacent its inner end with a flange 309 having a conicalwedge 3H which converges toward the outer end of the sleeve. A collar3|3 slidable on the sleeve has a conical wedge 3I5 which converges awayfrom the outer end of the sleeve. Between flange 309 and collar 3|3 isan annular elastic ring SI1 of rubber or the like, fitted upon thesleeve with its central aperture countersunk for reception of theopposed wedges 3H and 3I5. A nut 3|9 is threaded upon the outer end ofthe sleeve backing up the collar. The nut is threaded up on the sleeveto expand the elastic ring within an endless band 32| of an abrasiveweb. Operation is the same as set forth in the above description of heelsander 243.

The above-described tools are particularly useful upon theshoe-finishing or repairing machine of this invention, since they areparticularly adapted for use upon the cantilevered spindles of themachine. They simplify removal and replacement of the abrasive webs,since the webs may be removed and replaced over the ends of the spindleswithout disassembling parts of the machine.

In view of the above, it will be seen that the several objects of theinvention are achieved and other advantageous results attained.

As many changes could be made in the above constructions withoutdeparting from the scope of the invention, it is intended that allmatter contained in the above description or shown in the accompanyingdrawings shall be interpreted as illustrative and not in a limitingsense.

We claim:

1. In apparatus of the class described, a movable carriage having aplurality of rotary shoenishing tool spindles journalled therein, saidcarriage being movable between a number of indexed positionscorresponding to the number of spindles to move a selected spindle andtool thereon to a working position wherein work may be applied to thetool, drive means cooperable with the selected spindle in said workingposition for driving it, and dust-collecting means movable between adust-collecting position with respect to a spindle in said workingposition and a retracted 10 position clearing all the spindles to permitmovement of the carriage.

2. In apparatus of the class described, a movable carriage having aplurality of rotary shoenisliing tool spindles journalled therein, saidcarriage being movable between a number of indexed positionscorresponding to the number of spindles to move a selected spindle andtool thereon to a working position wherein work may be applied to thetool, drive means cooperable With the selected spindle in said workingposition for driving it, dust-collecting means movable between adust-collecting position with respect to a spindle in said workingposition and a retracted position clearing all the spindles to permitmovement of the carriage, and means for maintaining said dust-collectingmeans in rectracted position when certain spindles are in said workingposition.

3. In apparatus of the class described, a turret, a plurality of rotaryshoe-iinishing tool spindles journalled at spaced intervals around saidturret, said turret being rotatable between a number of indexedpositions corresponding to the number of spindles to move a selectedspindle and tool thereon to a working position wherein Work may beapplied to the tool, drive means cooperable with the selected spindle insaid working position for driving it, and dust-collecting means movablebetween a dust-collecting position with respect to a spindle in saidworking position and a retracted position clearing all the spindles topermit rotation of the turret.

4. In apparatus .of the class described, a turret, a plurality of rotaryshoe-finishing tool spindles journalled at spaced intervals around saidturret, said turret being rotatable between a number of indexedpositions corresponding to the number of spindles to move a selectedspindle and tool thereon to a working position wherein work may beapplied to the tool, drive means cooperable With the selected spindle insaid Working position for driving it, dust-collecting means movablebetween a dust-collecting position with respect to a spindle in Saidworking position and a retracted position clearing all the spindles topermit rotation of the turret, and means for maintaining said dust-co1-lecting means in retracted position when certain spindles are in saidworking position.

5. In apparatus of the class described, a turret, a plurality of rotaryshoe-finishing tool spindles journalled at spaced intervals around saidturret, said turret being rotatable between a number of indexedpositions corresponding to the number of spindles to move a selectedspindle and tool thereon to a working position wherein work may beapplied to the tool, means for latching said turret in any one of itsindexed positions, drive means releasably engageable with the selectedspindle in said working position for driving it, dust-collecting meansmovable between a dustcollecting position with respect to a spindle insaid working position and a retracted position clearing all thespindles, and means for concurrently releasing said latch means anddrive means and Amoving said dust-collecting means to retracted positionto permit rotation of the turret.

6. In apparatus of the class described, a turret, a plurality of rotaryshoe-iinishing tool spindles journalled at spaced intervals around saidturret, said turret being rotatable between a number of indexedpositions corresponding to the number of spindles to move a selectedspindle and tool thereon to a working position wherein-work may movingsaid dust-collecting means/to retracted position to permit rotation ofthe turret, and means controlled by said turret for maintaining saiddust-collecting means in retracted position when certain spindles are insaid Working position.

7. In apparatus of the class described, a turret, a plurality of rotaryshoe-iinishing tool spindles journalled at spaced intervals around saidturret, each of said spindles having a clutch element thereon adapted tobe driven, said turret being f' rotatable between a number of indexedpositions corresponding to the number of spindles to move a selectedspindle and tool thereon to a working position wherein work may beapplied to the tool, means for latching said turret in any one of itsindexed positions, a shiftable driving clutch element releasablyengageable with the driven clutch element of the selected spindle insaid working position for driving it, a dust-collecting hood movablebetween a dust-collecting position with respect to a spindle in saidWorking position and a retracted position clearing all the spindles, andmeans movable by an operator for concurrently releasing said latchmeans, shifting said driving clutch element out of engagement with aspindle clutch element and moving said hood to retracted position topermit rotation of said turret.

8. In apparatus of the class described, a turret, a plurality of rotaryshoe-iinishing tool spindles journalled at spaced intervals around saidturret, each of said spindles having a clutch element thereon adapted tobe driven, said turret being rotatable between a number of indexedpositions corresponding to the number of spindles to move a selectedspindle and tool thereon to a working position wherein Work may beapplied to the tool, means for latching said turret in any one of itsindexed positions, a shiftable driving clutch element releasablyengageable with the driven clutch element of the selected spindle insaid working position for driving it, a dust-collecting hood movablebetween a dust-collecting position with respect to a spindle in saidworking position and a retracted position clearing all the spindles,

means movable by an operator for concurrently releasing said latchmeans, shifting said driving clutch element out of engagement with aspindle clutch element and moving said hood to retracted position topermit rotation of said turret, and cam means controlled by said turretfor maintaining said hood in retracted position when certain spindlesare in said working position.

9. A shoe-finishing or repairing machine comprising a rotatable shaft, apair of axially spaced turrets fixed on said shaft, a plurality ofspindles journalled at spaced intervals around each turret on axesparallel to and equidistant from the axis of said shaft, each spindle onone turret being axially aligned with a spindle on the other, eachspindle extending axially outward from its respective turret andcarrying a shoe-finishing tool on its axially outer end, said turretsbeing conjointly rotatable between a number of indexed positionscorresponding to the number of spindles 412 on a turret to move aselected pair of aligned spindles and the tools thereon to a workingposition, and drive means located between said turrets cooperable withthe selected pair of spindles in working position for driving them.

10. A shoe-iinishing or repairing machine comprising a rotatable shaft,a pair of axially spaced turrets fixed on said shaft, a, plurality ofspindles journalled at spaced intervals around each turret on axesparallel to and equidistant from the axis of said shaft, each spindle onone turret being axially aligned with a spindle on the other, eachspindle carrying a shoe-iinishing tool on the outside of, and a clutchelement adapted to be driven to rotate the spindle on the inside of itsrespective turret, said turrets being conjointly rotatable between anumber of indexed positions corresponding to the number of spindles on aturret to move a selected pair of aligned spindles and the tools thereonto a working position, means for latching the turrets in any one oftheir indexed positions, shiftable driving clutch elements releasablyengageable with the driven clutch elements of the selected pair ofspindles in working position for driving them, and means forconcurrently releasing said latch means and shifting said driving clutchelements out of engagement with the spindle clutch elements to permitrotation of the turret.

1l. In apparatus of the class described, a base, a turret journalled forrotation on said base, spindles journalled in said turret on axesparallel to and equidistant from the turret axis, each spindle carryinga shoe-iinishing tool on one side of said turret, said turret beingrotatable between a number of indexed positions corresponding to thenumber of spindles to move a selected spindle and tool thereon to aworking position, drive means carried by the base and cooperable withthe selected spindle in working position for driving it, and adust-collecting hood pivoted on said base for swinging movement about anaxis transverse to the turret axis between a dust-collecting positionwith respect to a tool in working position and a retracted positionclearing all the tools.

12. In apparatus of the class described, a base, a turret journalled forrotation on said base, spindles journalled in said turret on axesparallel to and equidistant from the turret axis, each spindle carryinga shoe-nishing tool on one side and a clutch element adapted to bedriven for rotating the spindle on the other side of the turret, saidturret being rotatable between a number of indexed positions corre`sponding to the number of spindles to move a selected spindle and toolthereon to a working position, means for latching said turret in any oneof its indexed positions, a shiftable driving clutch element carried bythe base releasably engageable with the driven clutch element of theselected spindle in working position for driving it, a dust-collectinghood pivoted on said base for swinging movement about an axis transverseto the turret axis between a dust-collecting position with respect to atool in working position and a, retracted position clearing all thetools, and means for concurrently releasing said latch means, shiftingsaid driving clutch element out of engagement with a spindle clutchelement and swinging said hood to retracted position.

13. In apparatus of the class described, a base, a turret journalled forrotation on said base, spindles journalled in said turret on axesparallel to and equidistant from the turret axis,

13 each spindle carrying a shoe-finishing tool on one side and a clutchelement adapted to be driven for rotating the spindle on the other sideof the turret, said turret being rotatable between a number of indexedpositions corresponding to the number of spindles to move a selectedspindle and tool thereon to a working position, means for latching saidturret in any one of its indexed positions, a, shiftable driving clutchelement carried by the base releasably engageable with the l drivenclutch element of the selected spindle in working position for drivingit, a dust-collecting hood pivoted on said base for swinging movementabout an axis transverse to the turret axis between a dust-collectingposition with respect to a tool in working position and a, retractedposition clearing the tools, means for concurrently releasing said latchmeans, shifting said clutch element out of engagement with a spindleclutch element and swinging said hood to retracted position, and meansresponsive to the indexed position of said turret for maintaining saidhood in retracted position when certain spindles and tools are inworking position.

14. In apparatus of the class described, a housing enclosing a blower, aturret journalled for rotation on said housing, spindles journalled insaid turret carrying shoe-finishing tools on one side thereof, saidturret being rotatable to various indexed positions wherein a selectedspindle is adapted to be driven, a dust-collecting hood mounted on saidhousing for movement between a dust-collecting position over the tool onthe driven spindle and a retracted position clearing all the tools, anda, flexible conduit connecting the hood and the blower.

15. In apparatus of the class described, a base, a turret journalled forrotation on said base, spindles journalled in said turret carryingshoeiinishing tools on one side and driven clutch elements on the other,said turret being rotatable to various indexed positions wherein aselected spindle and tool are in a working position at the front of saidbase, means for latching the turret in any one of said indexedpositions, a shiftable driving -f clutch element carried by said basereleasabli7 engageable with the driven clutch element of the spindle inworking position, a dust-collecting hood mounted on said base formovement between a dust-collecting position over the tool in workingposition and a retracted position clearing all the tools, a pedal, andlinkages operable by said pedal concurrently to release said latchmeans, shift said driving clutch element out of engagement with a drivenclutch element and move said hood to retracted position.

16. In apparatus of the class described, a base, a turret journalled forrotation on said base, spindles journalled in said turret carryingshoe-iinishing tools on one side and driven clutch elements on theother, said turret being rotatable to various indexed positions whereina selected spindle and tool are in a working position at the front ofsaid base, means for latching the turret in any one of said indexedpositions, a shiftable driving clutch element carried by said basereleasably engageable with the driven clutch element of the spindle inworking position, a dust-collecting hood mounted on said base formovement between a dust-collecting position over the tool in workingposition and a retracted position clearing all the tools, a pedal,inlrages operable by said pedal concurrently to release said latchmeans, shift said driving clutch element out of engagement with a drivenclutch element and move said hood to retracted position, a cam rotatablewith said turret, and means controlled by said ycam for maintaining saidhood in retracted position when certain spindles are in workingposition, there being a lost-motion connection between the pedal and thehood-operating linkage to permit latching of the turret and engagementof the clutch elements when the hood is maintained in retractedposition.

17. A shoe-finishing or repairing machine comprising a rotatable shaft,a pair of axially spaced turrets fixed on said shaft, a plurality ofspindles journalled at spaced intervals around each turret on axesparallel to and equidistant from the axis of said shaft, each Spindle onone turret being axially aligned with a spindle 0n the other, eachspindle extending axially outward from its respective turret andcarrying a shoe-finishing tool on its axially outer end, said turretsbeing Conjointly rotatable between a number of indexed positionscorresponding to the number of spindles on a turret to move a selectedpair of aligned spindles and the tools thereon to a working position,and drive means cooperable with the selected pair of spindles in workingposition for driving them.

ROY N. SUTTON. ELMER. A. THOMAS.

REFERENCES CITED The following references are of record in the le ofthis patent:

UNITED STATES PA'IIEZNTSl Number Name Date 1,011,461 Manning et al Dec.12, 1911 1,842,551 Klos Jan. 26, 1932 1,965,707 Levoy July 10, 19341,971,653 Levoy et al Aug. 28, 1934 2,095,379 Coney Oct. 12, 19372,183,055 Vanderpool Dec. 12, 1939

